FireEye: The free Android apps available from Google Play Store and have over a million downloads were found to use vulnerable cryptographic systems to protect the sensitive information they store.
An analysis of the most popular free apps (9.339 apps) available in the official Google Store reveals that about 62% of them, or 5.147, were unable to properly secure confidential information, which could allow an attacker to steal the "protected" data by exploiting various weak points.
Her researchers FireEye (you can read more on the official website) did the tests on samples that met the popularity criteria mentioned above at 22 November 2014.
Experts looked for vulnerabilities in high entropy, algorithms encryption keys and encryption keys.
Most of the productof those found to be cryptographically insecure were with the encryption algorithms. An attacker could leverage use a reverse dictionary to discover the original string, without knowing the wrenches used for encryption.
The cases of low entropy weaknesses discovered by company security concerns involved 1.762 apps that used a static key to encrypt information, which could be extracted to reverse the process.
So beware of what you download, or to be even more confident, of what you store on your devices.
